Grow a Garden Trade Calculator — Win, Fair or Loss Checker
Compare any Grow a Garden trade accurately — add crops and pets to both sides with their exact weight, mutation, and age bonus, and get a Win, Fair or Loss verdict based on real formula values. No more guessing whether a trade is fair. Free, updated August 2026.
Quick Answer: The GAG Trade Calculator applies the full Base × Weight² × Mutation × Age% formula to every item on both sides, then compares totals. This is the only accurate way to compare GAG trades — eyeballing weight and mutation combinations always underestimates or overestimates real value, especially when mutations differ significantly.
Trade Calculator — Fast Facts
Why GAG Trades Are Hard to Judge by Eye
Grow a Garden trades involve multiple compounding variables — base crop value, weight squared, mutation multiplier, and age bonus. Each variable amplifies the others. Two crops that look similar can have wildly different actual values:
- A 15kg Ascended Dragon Fruit vs a 10kg Prismatic Night Bloom — which is worth more?
- A Disco (125x) Mango at 20kg vs a Nightmare (80x) Starfruit at 25kg?
- Two Corrupted (70x) crops at different weights?
None of these comparisons can be accurately eyeballed — the Weight² component means small weight differences create large value gaps, and stacked mutation multipliers make side-by-side comparisons unreliable without calculation. The trade calculator solves this in seconds.
How to Use the GAG Trade Calculator
Enter each item on both sides of the proposed trade — select the crop or pet, enter its weight in kg, select the mutation from the dropdown, and add the age bonus percentage. Click "+ Add Item" to add it to that side. Repeat for all items on both sides. The verdict updates automatically after each addition.
Interpreting the WIN / FAIR / LOSS Verdict
| Verdict | Meaning | What to Do |
|---|---|---|
| WIN | Your total value exceeds theirs by more than 5% | Good trade — accept if you want the items |
| FAIR | Both sides within 5% of each other | Equal exchange — accept if the items suit you |
| LOSS | Their total exceeds yours by more than 5% | Counter-offer or decline |
Common GAG Trading Mistakes
- Comparing mutation names without checking multipliers — "Shocked" sounds less impressive than "Nightmare" but 100x vs 80x means Shocked is actually 25% more valuable per item at the same base and weight.
- Ignoring weight differences — a 5kg crop vs a 15kg crop is not a 3x difference — it is 25 vs 225 in the formula squared, a 9x difference. Always enter exact weights.
- Forgetting age bonus compounds — age bonus applies after all other multipliers, making it more valuable on high-weight, high-mutation crops than on low-value crops.
- Trading under time pressure — always run the calculator before accepting any significant trade. Urgency is a manipulation tactic designed to prevent verification.
Frequently Asked Questions
How does the GAG trade calculator work?
Select crop, enter weight, choose mutation, add age bonus — click Add Item. Repeat for all items on both sides. The calculator applies Base × Weight² × Mutation × (1+Age%) to each item, totals both sides, and shows WIN FAIR or LOSS.
What counts as a fair trade in Grow a Garden?
A fair trade is when both sides calculate within 5% of each other using the full formula. The calculator shows FAIR for trades in this range, WIN when your side is higher, and LOSS when theirs is higher.
Can I add multiple items to each side?
Yes — click "+ Add Item" as many times as needed. The calculator totals all items on each side. Multi-item trades are where the calculator is most useful — eyeballing 3+ crops with different mutations and weights is nearly impossible accurately.
Does weight really matter that much in GAG trading?
Massively — weight is squared. A 10kg crop vs a 15kg crop is not 50% more valuable — it is 225 vs 100 in the formula, a 125% difference from a 5kg weight gap. Always enter exact weights.
What is the most important factor in GAG trade value?
At high weights, mutation becomes the dominant factor because mutations multiply the already-squared weight value. At low weights, even extreme mutations have limited impact because the weight² base is small. Heavy crops with top mutations are worth exponentially more than light crops with the same mutations.